Current pain and headache reports
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The design and execution of clinical trials poses special problems for cluster headache. Although there is less inter-individual and intra-individual variability of attacks than seen with migraine, the brevity of attacks, spontaneous remissions unrelated to treatment, and the relative rarity of cluster headaches challenge investigators. The International Headache Society has developed guidelines that represent a compromise between scientific rigor and practicality. Only injectable sumatriptan for acute attacks and verapamil for prophylaxis have demonstrated a robust therapeutic effect in controlled clinical trials.
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Cluster headache is the most painful of the primary headache disorders and elucidating pathophysiology and treatment for this disorder is crucial. There is justification for studying attacks untreated, and even for precipitating these attacks. Placebo-controlled studies should only be undertaken for regulatory purposes; otherwise, active control should be used.
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Misdiagnosis of cluster headache is common in clinical practice and can lead to significant morbidity. The International Headache Society has published diagnostic criteria that are generally straightforward and useful, but careful understanding of these criteria and how to handle exceptions is necessary. The primary diagnostic points involve severity, length, and frequency of individual headache attacks, as well as the presence of ipsilateral autonomic features. Such additional features as time cycling of headache clusters, physical characteristics of patients, and response to treatment may prove useful in individual cases, but must not be relied on too much.
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Curr Pain Headache Rep · Feb 2002
ReviewThe significance of the concept of obsessive-compulsive spectrum disorder to the treatment of chronic nonmalignant pain.
The concept of an obsessive-compulsive spectrum of disorders has become useful. This article reviews what has been learned about these conditions (especially in the last few years), and how this information may be helpful to clinicians and researchers who work with patients with chronic nonmalignant pain.
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Curr Pain Headache Rep · Feb 2002
ReviewInterventional treatment for cluster headache: a review of the options.
There is no more severe pain than that sustained by a cluster headache sufferer. Surgical treatment of cluster headache should only be considered after a patient has exhausted all medical options or when a patient's medical history precludes the use of typical cluster abortive and preventive medications. ⋯ To understand the rationale behind the surgical treatment strategies for cluster, one must have a general understanding of the anatomy of cluster pathogenesis. The most frequently used surgical techniques for cluster are directed toward the sensory trigeminal nerve and the cranial parasympathetic system.